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Item # SHI0660

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Item # SHI0660

Move up from 10.

Shimano knew that the Ultegra 6800 cassette would reside as the heart of the new 11-speed system, which is why it devoted considerable time on a feature known as 'rider-tuning.' What this means is that you receive an updated range of useable gearing options with the advent of the 11-speed design.

Cassette options with Ultegra 6800 now range from 11-23 to its climber-friendly 11-32. The additional cog in the back means the new cassette runs straight through for a bit longer, which generally means the addition of an 18T cog over the 10-speed. This smoother run of gearing is most noticeable while spinning in the top end of the block, allowing more consistency and control over your cadence compared to 10-speed cassettes.

Shimano Ultegra CS-6800 Cassette is slightly lighter than its 6700 brother, and it does a nice job of closing the gap on Dura-Ace 9000. The tallest cogs are riveted onto an aluminum carrier for weight savings, and they're gentler on aluminum cassette bodies. Shimano improved its manufacturing quality too; now they can make the ramps stronger because they can build to tighter tolerances. And the ramps themselves have been revised for faster shifting.

The Ultegra CS-6800 Cassette has 11 cogs and comes in the following ratios: 11-23T, 11-25T, 12-25T, 11-28T, and 11-32T. Each cassette wears a nice chrome finish and comes with an alloy lock ring. Please note that the CS-6800 is recommended to be paired with corresponding Ultegra 6800 components.

  • Steel cogs
  • Aluminum carrier
  • Variety of gear options

Tech Specs

Cog Sizes:
11 x 23 t, 11 x 25 t, 11 x 28 t, 11 x 32 t, 12 x 32 t
Cog Material:
Carrier Material:
Recommended Use:
road cycling
Actual Weight:
Gray, 11x23: 212gGray, 11x25: 212gGray, 11x28: 212gGray, 12x25: 212gGray, 11x32: 212g

Community & Reviews

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Shimano Ultegra 6800 Cassette

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Here's what others have to say...

5 5

The best cassette

  • Familiarity: I've put it through the wringer

I'm running this with my DA9000 setup and it works flawlessly. Why not run a DA you ask? well I don't like spending that much more money to save a couple grams and the ultegra just last way longer.

Avg. ride time: 2h 30m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.
5 5

White Collar Conduct, Blue Collar Wage

  • Familiarity: I've put it through the wringer

While not as light as Dura Ace, the Ultegra cassette offers smooth shifting and long durability at a reasonable price tag. Unless you are counting every gram or have a Dura Ace tattoo somewhere on your body, your cassette search ends here.

I have dura ace di2 with a 11/28 cassette and 52/36 up front...its hard on long big climbs, can i change the cassette for this 11/32? is it compatible? will i sacrifice the quality of the durance di2?

Best Answer Responded on

If you have the dura ace di2 RD-9070 rear derailleur, unfortunately no. You need a medium cage rear derailleur to use the 11/32 cassette. I'd recommend considering switching to a compact crank instead - like the FC-9000 50/34

5 5


  • Familiarity: I've used it several times

No big shocker, but it works! Had to upgrade from a 10 speed freehub body on this older wheelset when I got the 105 5800 group. Works like it's always been this way, good cassette!

Avg. ride time: 5h 14m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.
5 5

It's a cassette

  • Familiarity: I've put it through the wringer

What can you say? It is a cassette. Shimano makes good stuff. This is nice. Not the lightest, but it gets the job done and done well. I am using the 11x25 11 spd version of this on my 2nd wheelset.

Avg. ride time: 6h 32m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.
5 5

Cassette gearing

  • Familiarity: I gave it as a gift but have feedback to share

11-23: 11-12-13-14-15-16-17-18-19-21-23
11-25: 11-12-13-14-15-16-17-19-21-23-25
11-28: 11-12-13-14-15-17-19-21-23-25-28
11-32: 11-12-13-14-16-18-20-22-25-28-32
12-25: 12-13-14-15-16-17-18-19-21-23-25

Avg. ride time: 10h 36m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.
5 5

Great Cassette for training.

  • Familiarity: I've put it through the wringer

11-speed. Great for climbing and all-around training. It doesn't wear out as quick as the DA versions

Can you use the 11-32 cassette with a RD...

Can you use the 11-32 cassette with a RD 6600 rear derailleur

Responded on

Hi Larry,

As I understand it you'd need the mid/long cage derailleur with an 11-32 cassette.

Can you use the 11-32t cassette with the...

Can you use the 11-32t cassette with the short cage derailleur?

Best Answer Responded on


No, you would need the Mid/Long cage derailleur if you wanted to use the 11-32t cassette. The short cage is designed to only have enough chain wrap for a 28t or less cassette.

Responded on

i use an 11-32 with a short, however, you CANNOT cross chain in your big ring (to your 32).
i have no problems with my small ring to my 32.
i only have this setup on my training wheels, and pay strict attention so that i do not cross chain.
if i have to be in my 32 i should be in my small ring anyways.
it is not the ideal setup, however it does work - you might have to adjust your b-screw.

5 5

Superb cassette and light :)

  • Gender: Male
  • Familiarity: I've put it through the wringer

Always superb quality, weight is dead-on at 212gm for the 11/23. I also have a DuraAce 9000 and will use this one for flats and daily riding, putting the 11/28 9000 series on my climbing wheels. For those using Shimano cassettes and note that some freehub bodies are prone to indents from the DuraAce cassettes - using Ultegra cassetes will always solve that problem, as the titanium cogs on the DuraAce are just too hard. Sticking with the Ultegra, especially at this price, is a total no brainer. Shifting is solid and dead on, no skips or hesitations and quiet as can be :) Also noted that I have tried Zipp and Mavic wheels with both the Ultegra and DuraAce 11-speed cassettes and have not had any scoring/indents on the freehub bodies; even after 3000 miles. Looks like the newer 11-speed freehubs are hardened (at least for these two manufacturers) - so cheers to that!

Superb cassette and light :)
Responded on

Do you need any spacer for ZIPP 2014 404 wheel? I mean on older version of mavic there had to be spacer first and than 10speed cassette. Now do you need spacer for new 11speed zipp wheel with 11speed cs-6800? (spacer woud go on the freehub body first ant than the cassette itself)

Thanks for info.

Responded on

Greetings - No need for the spacer on the new Zipps ;) For the Mavics, just remove that specific washer/spacer, and 11-speed will work as well :) Note, all the new 11-speed drivetrains use the same spacing, so now you can use any 11-speed cassette with any drivetrain - like a mutt ;)

Can the CS-6800 be used on the Shimano...

Can the CS-6800 be used on the Shimano version of the PowerTap G3? I'm using this hub with CS-6600 right now.

Best Answer Responded on

greetings - You should be good to go :) See the link to the actual PowerTap website for that tasty hub. Good day :)

Responded on

Unfortunately, I found that the CS-6800 doesn't fit my Shimano PowerTap G3. I'm trying to buy a replacement 11-speed freewheel body for it. My understanding is that this freewheel body will not require re-dishing my wheel and will allow me to mount the CS-6800 ... and therefore upgrade to Ultegra 6800 throughput.

Maybe DRZIPGRIP is thinking of newer versions of the G3 hub, but mine certainly does not accommodate this cassette.

Responded on

Mike, I just replaced the freehub body in my G3 with the 11 speed version and it is a piece of cake. It will allow you to run a 10 speed cassette (with a spacer) and the 11 speed cassette without. It just pulls right out of the hub and you slide the new one in.


Responded on

It's a piece of cake if you have a compatible PowerTap hub; some PowerTaps can't accept the 11-speed body. (And, even if it does, it's about $90 to buy the new hub.)

Avg. ride time: 9h 26m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Is this cassette compatible with Dura-Ace...

Is this cassette compatible with Dura-Ace 9000?

Best Answer Responded on

Yes, this cassette is compatible with Dura-Ace 9000.

Sorry, amateur question, can the 6800 be...

Sorry, amateur question, can the 6800 be dropped in place of an existing 10sp 6700 gear set, or does the full set need to be upgraded as well?

Responded on

I would think that you'd have to switch out the shifters for sure to get the 11th gear, but the rear derailleur is probably still ok from the 6700.

Best Answer Responded on

Additionally, wheel manufactures are still catching up to the 11-speed. Currently the Shimano 9000 line of wheels with work, also, Most Mavic wheels will work with 11-speed, even some older models. New Zipp's will work. Just make sure that the wheelset you are using is compatible - hope it is :)